/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:42:13,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:13,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:13,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:13,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:13,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:13,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:13,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:13,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:13,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:13,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:13,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-10-23 18:42:13,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:13,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:13,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:13,653 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:42:13,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:13,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:13,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:13,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:13,683 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:13,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:13,683 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:13,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:13,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:13,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:13,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:13,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:13,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:13,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:13,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:13,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:13,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:13,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:13,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:13,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:13,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:13,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:13,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:13,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:13,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:13,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:13,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:13,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:13,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:13,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:14,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:14,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:14,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:14,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:14,117 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:14,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ncompf.c [2020-10-23 18:42:14,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f77faa8/ea142b368b644966bf7da753e59a4bee/FLAG934cd226e [2020-10-23 18:42:14,860 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:14,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ncompf.c [2020-10-23 18:42:14,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f77faa8/ea142b368b644966bf7da753e59a4bee/FLAG934cd226e [2020-10-23 18:42:15,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f77faa8/ea142b368b644966bf7da753e59a4bee [2020-10-23 18:42:15,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:15,196 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:15,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:15,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:15,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:15,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:15" (1/1) ... [2020-10-23 18:42:15,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbadeea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:15, skipping insertion in model container [2020-10-23 18:42:15,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:15" (1/1) ... [2020-10-23 18:42:15,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:15,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:15,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:15,443 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:15,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:15,488 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:15,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:15 WrapperNode [2020-10-23 18:42:15,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:15,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:15,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:15,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:15,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:15" (1/1) ... [2020-10-23 18:42:15,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:15" (1/1) ... [2020-10-23 18:42:15,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:15" (1/1) ... [2020-10-23 18:42:15,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:15" (1/1) ... [2020-10-23 18:42:15,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:15" (1/1) ... [2020-10-23 18:42:15,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:15" (1/1) ... [2020-10-23 18:42:15,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:15" (1/1) ... [2020-10-23 18:42:15,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:15,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:15,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:15,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:15,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:15,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:15,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:15,625 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:15,626 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:42:15,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:15,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:42:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:42:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:42:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:15,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:16,224 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:16,224 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 18:42:16,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:16 BoogieIcfgContainer [2020-10-23 18:42:16,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:16,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:16,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:16,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:16,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:15" (1/3) ... [2020-10-23 18:42:16,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b353099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:16, skipping insertion in model container [2020-10-23 18:42:16,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:15" (2/3) ... [2020-10-23 18:42:16,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b353099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:16, skipping insertion in model container [2020-10-23 18:42:16,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:16" (3/3) ... [2020-10-23 18:42:16,240 INFO L111 eAbstractionObserver]: Analyzing ICFG ncompf.c [2020-10-23 18:42:16,274 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:16,281 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:16,298 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:16,343 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:16,343 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:16,344 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:16,344 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:16,344 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:16,344 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:16,344 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:16,345 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-23 18:42:16,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 18:42:16,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:16,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:42:16,379 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:16,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:16,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1041170357, now seen corresponding path program 1 times [2020-10-23 18:42:16,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:16,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516172312] [2020-10-23 18:42:16,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:16,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:16,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:16,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516172312] [2020-10-23 18:42:16,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:16,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:16,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929640774] [2020-10-23 18:42:16,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:16,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:16,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:16,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:16,722 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-23 18:42:16,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:16,851 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2020-10-23 18:42:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:16,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-23 18:42:16,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:16,861 INFO L225 Difference]: With dead ends: 69 [2020-10-23 18:42:16,862 INFO L226 Difference]: Without dead ends: 33 [2020-10-23 18:42:16,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:16,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-23 18:42:16,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-23 18:42:16,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-23 18:42:16,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-23 18:42:16,914 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 25 [2020-10-23 18:42:16,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:16,914 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-23 18:42:16,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:16,915 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-23 18:42:16,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 18:42:16,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:16,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:42:16,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:16,917 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:16,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:16,918 INFO L82 PathProgramCache]: Analyzing trace with hash 20102003, now seen corresponding path program 1 times [2020-10-23 18:42:16,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:16,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041745786] [2020-10-23 18:42:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:16,947 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:42:16,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812167469] [2020-10-23 18:42:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:42:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:17,037 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:17,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:17,099 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:42:17,100 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:42:17,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:42:17,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:17 BoogieIcfgContainer [2020-10-23 18:42:17,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:17,404 INFO L168 Benchmark]: Toolchain (without parser) took 2209.97 ms. Allocated memory is still 160.4 MB. Free memory was 135.4 MB in the beginning and 90.5 MB in the end (delta: 44.8 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:17,407 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 160.4 MB. Free memory is still 132.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:17,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.77 ms. Allocated memory is still 160.4 MB. Free memory was 134.8 MB in the beginning and 124.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:17,409 INFO L168 Benchmark]: Boogie Preprocessor took 46.77 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:17,411 INFO L168 Benchmark]: RCFGBuilder took 689.30 ms. Allocated memory is still 160.4 MB. Free memory was 123.0 MB in the beginning and 105.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:17,416 INFO L168 Benchmark]: TraceAbstraction took 1167.50 ms. Allocated memory is still 160.4 MB. Free memory was 105.0 MB in the beginning and 90.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:17,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 160.4 MB. Free memory is still 132.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.77 ms. Allocated memory is still 160.4 MB. Free memory was 134.8 MB in the beginning and 124.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.77 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 689.30 ms. Allocated memory is still 160.4 MB. Free memory was 123.0 MB in the beginning and 105.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1167.50 ms. Allocated memory is still 160.4 MB. Free memory was 105.0 MB in the beginning and 90.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=13, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L30] long long *c = malloc(sizeof(long long)*N); [L32] a[0] = 6 [L33] b[0] = 1 [L34] c[0] = 0 [L35] i=1 VAL [\old(N)=0, a={2:0}, b={-1:0}, c={1:0}, i=1, malloc(sizeof(long long)*N)={1:0}, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={2:0}, N=1] [L35] COND FALSE !(i